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Finding the Fourth Proportional to 662,418.40, 994,286.80 and 307,512.80

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Solution

The fourth proportional to 662,418.40, 994,286.80 and 307,512.80 is: 461,575.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,418.40 : 994,286.80 = 307,512.80 : x
  2. Step 2: Convert to fraction form
    662,418.40/994,286.80 = 307,512.80/x
  3. Step 3: Cross multiply
    662,418.40x = 994,286.80 × 307,512.80
  4. Step 4: Simplify right side
    662,418.40x = 305,755,917,871.04
  5. Step 5: Solve for x
    x = 305,755,917,871.04/662,418.40
  6. Step 6: Final answer
    x = 461,575.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.